#!/bin/sh
set -eu

BACKUP_DIR="/backups"
RETENTION_DAYS=7
TIMESTAMP=$(date +%Y%m%d_%H%M%S)
BACKUP_FILE="${BACKUP_DIR}/moviedice_${TIMESTAMP}.sql.gz"

echo "[$(date -Iseconds)] Starting database backup"

pg_dump -h supabase-db -U "$POSTGRES_USER" -d "$POSTGRES_DB" \
  | gzip > "${BACKUP_FILE}"

echo "[$(date -Iseconds)] Backup saved to ${BACKUP_FILE}"

# Remove backups older than retention period
find "${BACKUP_DIR}" -name "moviedice_*.sql.gz" -mtime +${RETENTION_DAYS} -delete

REMAINING=$(find "${BACKUP_DIR}" -name "moviedice_*.sql.gz" | wc -l)
echo "[$(date -Iseconds)] Cleanup complete. ${REMAINING} backup(s) retained."